Selects: How Electricity Works

Since humans first looked up, we’ve wondered about our place in the cosmos, yet everything we’ve learned has shown that our ignorance still outstrips our knowledge. While to some that may seem disheartening, science educator Neil deGrasse Tyson finds it exciting to know there’s so much left in the universe to discover. The study of astrophysics, he says, gives us a valuable perspective on ourselves while revealing the nature of the universe in which we live.

Tyson explains in layman’s terms how physicists use the fundamentals of science and the full range of visible and invisible light to unravel the mysteries of the cosmos. He then goes on to cover the three biggest mysteries in astrophysics today—the origin of the universe, dark matter, and dark energy—while making a case for the benefits of understanding where we fit in the universal scheme. In this guide, we’ll also provide the historical context for astronomy’s groundbreaking discoveries and explain in more depth the current theories that are guiding astrophysics’ progress.

The science of physics studies many topics, from the gravity holding planets together to electromagnetism and the microscopic forces inside the heart of the atom. Each of these forces works by different rules, some of which contradict each other. For centuries, scientists have sought a single theory that would unify these disparate fields and provide one equation from which we can derive a complete understanding of the universe. In The God Equation, theoretical physicist Michio Kaku suggests that an approach called “string theory” may be the path to uniting all the different laws of nature.

In this guide, we’ll trace the history of discoveries that unify areas of knowledge and reveal the underlying symmetries of nature. We’ll delve into string theory and define terms and concepts to give readers an understanding of the topic. We’ll discuss research to support string theory’s claims, and we’ll touch on the philosophical implications that a theory of the universe entails.

Many college students take a Psychology 101 class, but not many of them actually absorb and remember the material. If you like the study of the mind but would rather pass on dry lectures, The Psychology Book offers a broad overview of psychology and how it’s changed over time, exploring its various fields and the major figures and theories in those fields. The authors bring a wide range of expertise to the book, including clinical psychology, business psychology, journalism, writing and editing, and music.

In our guide, we’ll explore the origins of psychology before moving chronologically through six major fields: behaviorism, psychoanalysis, cognitive psychology, social psychology, developmental psychology, and differential psychology. We’ll also add historical context, criticisms and limitations of certain theories, and updated research that supports or contradicts some theories.

The science of physics studies many topics, from the gravity holding planets together to electromagnetism and the microscopic forces inside the heart of the atom. Each of these forces works by different rules, some of which contradict each other. For centuries, scientists have sought a single theory that would unify these disparate fields and provide one equation from which we can derive a complete understanding of the universe. In The God Equation, theoretical physicist Michio Kaku suggests that an approach called “string theory” may be the path to uniting all the different laws of nature.

In this guide, we’ll trace the history of discoveries that unify areas of knowledge and reveal the underlying symmetries of nature. We’ll delve into string theory and define terms and concepts to give readers an understanding of the topic. We’ll discuss research to support string theory’s claims, and we’ll touch on the philosophical implications that a theory of the universe entails.

Since humans first looked up, we’ve wondered about our place in the cosmos, yet everything we’ve learned has shown that our ignorance still outstrips our knowledge. While to some that may seem disheartening, science educator Neil deGrasse Tyson finds it exciting to know there’s so much left in the universe to discover. The study of astrophysics, he says, gives us a valuable perspective on ourselves while revealing the nature of the universe in which we live.

Tyson explains in layman’s terms how physicists use the fundamentals of science and the full range of visible and invisible light to unravel the mysteries of the cosmos. He then goes on to cover the three biggest mysteries in astrophysics today—the origin of the universe, dark matter, and dark energy—while making a case for the benefits of understanding where we fit in the universal scheme. In this guide, we’ll also provide the historical context for astronomy’s groundbreaking discoveries and explain in more depth the current theories that are guiding astrophysics’ progress.

A scientist whose discoveries could have revolutionized the field of electrical engineering is now suspected of manipulating the results of his studies. This incident highlights the problem with the scientific community’s “publish or perish” culture.

Though it’s become widely accepted that climate change is real, the questions still remain of what steps we should take to fix the damage and whether they'll be enough. Many scientists and activists believe that the climate has already passed a tipping point and that environmental catastrophe is inevitable. In Apocalypse Never, award-winning science writer Michael Shellenberger says that it’s time to assess the crisis from a rational perspective. He argues that we’re in a much better position to curb climate change than alarmists would have us believe, and that people who bend scientific truth in order to spur environmental action are doing more harm than good.

In this guide, we’ll explain Shellenberger’s argument that environmental alarmists overstate their claims and that there’s ground for hope for our planet’s future. We’ll also look at counter-arguments to Shellenberger’s claims and examine what independent research says about the solutions he suggests. We’ll point to recent developments in industry, agriculture, and the political climate that frame the conversation around climate change.

Extreme weather events in the US in recent years have highlighted the growing vulnerability of the power grid. Many believe upgrades are necessary, but the competing interests of fossil fuel and renewable energy supporters make for a bumpy road ahead.

In Sapiens, Yuval Noah Harari uses concepts from biology, history, and economics to tell the story of us, Homo sapiens. We start 2.5 million years ago, when Sapiens make their historical entrance, and end in the future, when the creation of an artificially created superhuman race may mark the end of the Sapiens species. Along the way, we learn how our ability to create imagined realities led to our dominance over other species. We watch as the Agricultural Revolution, the Scientific Revolution, imperialism, capitalism, and the Industrial Revolution change our species in lasting, and not always positive, ways.

Ultimately, we’re left with one question: As we design our future, who do we want to become? Asking the right questions may be more important than finding the right answers. Read this summary to explore our history as a species—in doing so, you’ll see today’s world in an entirely new way.

In Sapiens, Yuval Noah Harari uses concepts from biology, history, and economics to tell the story of us, Homo sapiens. We start 2.5 million years ago, when Sapiens make their historical entrance, and end in the future, when the creation of an artificially created superhuman race may mark the end of the Sapiens species. Along the way, we learn how our ability to create imagined realities led to our dominance over other species. We watch as the Agricultural Revolution, the Scientific Revolution, imperialism, capitalism, and the Industrial Revolution change our species in lasting, and not always positive, ways.

Ultimately, we’re left with one question: As we design our future, who do we want to become? Asking the right questions may be more important than finding the right answers. Read this summary to explore our history as a species—in doing so, you’ll see today’s world in an entirely new way.

Though it’s become widely accepted that climate change is real, the questions still remain of what steps we should take to fix the damage and whether they'll be enough. Many scientists and activists believe that the climate has already passed a tipping point and that environmental catastrophe is inevitable. In Apocalypse Never, award-winning science writer Michael Shellenberger says that it’s time to assess the crisis from a rational perspective. He argues that we’re in a much better position to curb climate change than alarmists would have us believe, and that people who bend scientific truth in order to spur environmental action are doing more harm than good.

In this guide, we’ll explain Shellenberger’s argument that environmental alarmists overstate their claims and that there’s ground for hope for our planet’s future. We’ll also look at counter-arguments to Shellenberger’s claims and examine what independent research says about the solutions he suggests. We’ll point to recent developments in industry, agriculture, and the political climate that frame the conversation around climate change.

These days, the world is moving faster than ever. Every day new scientific discoveries are announced, conflict breaks out somewhere in the world, and nature and the climate behave unexpectedly. If you feel overwhelmed or destabilized by this, you’re not alone—no period in the history of humanity has ever been subject to such quickly changing conditions as today.

In Thank You For Being Late, author, journalist, and columnist Thomas Friedman explains how these conditions arose—the three forces that shape the world, technology, globalization, and climate change, all accelerated at once—and how we can adapt to them.